2024 Chevrolet Colorado Transmission and drivetrain Problems

“When coming to a stop the vehicle slams into 1st gear raising the RPMs and pushing the vehicle forward even when the brakes are being applied. No warning lights no other malfunction or symptoms. Has occurred this I first purchased the vehicle new in January of 2025. Has almost caused collisions. Never took it to the dealership due to the information I've gathered if was a common issue but I believe it is a major safety concern due to the vehicle lunging forward when the brakes are applied.”

“Check engine light with codes p0700 and p2796 has been happening for months with multiple failed repair attempts. Vehicle was returned to me by the dealer supposedly fixed. I drove it 15 minutes to the high school for an art fair my daughter was in. They (my family) rode with me home. Check engine light was on again. On the way home, the transmission was acting strange, not shifting properly. About half way home, it got stuck in a gear at 3500 or so rpms and would not shift. I tried the manual shifter, and it didn’t work. Stuck in gear. …”

“A few weeks ago the heat started performing intermittently, about half the time only blowing out cold air even with the temperature set to 85°. I live in Minnesota and we have had numerous weeks of below 0 temperatures. Lo and behold, I find out there are widespread reports of the O ring seals on the radiator and heater hoses failing and causing coolant leaks. These leaks are significant enough to render the vehicle inoperable and with no cabin heating or cooling. This could lead to life-threatening situations in adverse weather conditions. …”

“Even when new, the truck would abruptly down shift from 2nd to 1st, every now and then. Then with about 3000 miles on the truck its started doing every time, once the transmission is warmed up. It seemed to get better and then started again with about 4000 miles and kept getting worse. It got so bad that the truck would shudder and it almost felt like I was getting rear ended and you could hear knocking from the transmission. I then turned it in the dealer and when I got it back, the dealer stated that they had to replace a valve in the valve body.”

“2024 Chevrolet Colorado with intermittent safety defect at highway speeds. Vehicle displays P215B along with Service ESC, Service Traction Control, and Reduced Acceleration. Speedometer becomes erratic and the vehicle loses reliable speed signal at highway speed. Dealer kept vehicle for 15 days, stated repairs were made, but the same issue returned within about 2 miles of pickup on the highway. Vehicle was returned to dealer immediately. As of April 2, total days out of service will be 21. I do not believe the vehicle is safe to drive or safe to transport my family in. GM case has been opened. …”